Fuel pump resistor

[Andy390]

Hi Guys. I'm, sure this has probably been discussed before, but can't find it on a search. Out of interest, does anyone know what resistance resistor i should be using for the fuel pump on a flapper EFI system, as my 390 hasn't got one, and i've read that it does improve the life of the pump for road use to use one?
Thanks in advance chaps
Andy

[rev-erend]

I think the theory goes that it lowers the voltage seen by the pump at lower revs hence less fuel delivered when it's not needed..

Don't know if TVR or the flapper system has one or not.

[TVRleigh_BBWR]

Umm it may have one somwhere stange,
As I know when my pump failed it was getting voltage but would not work.
but if I put a direct feed to it, it would.